Chicago Rockford International Airport
Chicago, United StatesRFD / KRFD
Regional airport · 61 direct destinations · 2 runways · longest runway 10,003 ft
51 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Chicago → Liège
RFD
ChicagoChicago Rockford International Airport
ChicagoChicago Rockford International AirportLGG
LiègeLiège Airport
LiègeLiège Airport- Distance
- 4,227 mi
- Estimated flight time
- ~9h
Liège is currently 7 hours ahead of Chicago.
Observed nonstop
How often does this route fly?
Frequency
Daily at most
On average around 1 flights a day, observed from October 2025 to September 2026.
- 1
- flights per day
- 1
- busiest month · Oct
- 7 hr 31 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 1Jan2026
- 1Feb
- 1Mar
- 1Apr
- 1May
- 1Jun
- 1Jul
- 1Aug
- 1Sep
- 1Oct2025
- 1Nov
- 1Dec
Airlines
Who flies it
Air Atlanta Icelandicall year
Air Atlanta Europenow and then
Through the day
Departure times
Local time in Chicago. Most departures between 22:00 and 01:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 0.1Mon
- 0Tue
- 0Wed
- 0.4Thu
- 0Fri
- 0Sat
- 0.4Sun
Fleet
Aircraft observed
- Boeing 747-400B744100%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1 | 4 |
|
| February 2026 | 1 | 4 |
|
| March 2026 | 1 | 6 |
|
| April 2026 | 1 | 4 |
|
| May 2026 | 1 | 6 |
|
| June 2026 | 1 | 4 |
|
| July 2026 | 1 | 4 |
|
| August 2026 | 1 | 6 |
|
| September 2026 | 1 | 6 |
|
| October 2025 | 1 | 2 |
|
| November 2025 | 1 | 4 |
|
| December 2025 | 1 | 2 |
|
Airlines observed on this route
From observed callsign routes on RFD-LGG - not a booking guarantee.
About this route
- Intercontinental: this route connects two continents.
- The longest observed direct route from RFD.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Chicago: 61.
- Direct destinations observed from Liège: 66.
The airports on this route
Liège Airport
Liège, BelgiumLGG / EBLG
Regional airport · 66 direct destinations · 2 runways · longest runway 12,106 ft
63 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Chicago to Liège
The observed direct connection between Chicago Rockford International Airport (RFD) and Liège Airport (LGG) covers approximately 4,227 mi. The estimated flight time is around 9h. Air Atlanta Europe and Air Atlanta Icelandic have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Chicago from Liège by air?
- The great-circle distance between Chicago Rockford International Airport and Liège Airport is approximately 4,227 mi.
- How long is the flight from Chicago to Liège?
- Based on the distance, the estimated flight time is about 9h. This is an estimate, not a schedule.
- Is there a direct connection from Chicago to Liège?
- Yes, a direct connection between RFD and LGG has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Air Atlanta Europe and Air Atlanta Icelandic.
- How often is there a flight from Chicago to Liège?
- On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 52 observed flights. Mainly Air Atlanta Icelandic, Air Atlanta Europe. That is an observation, not a timetable.
- What is the current time difference between Chicago and Liège?
- Liège is currently 7 hours ahead of Chicago.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.